US4122045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-punking non-corrosive phenolic foam containing sodium tetraborate
Assignee: Armstrong World Industries Inc
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Filing: 1976-05-24
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Granted: 1978-10-24
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Expires: 1996-05-24
Abstract
Abstract A phenolic foam that is non-corrosive to metallic substrates over which it is applied is disclosed herein. The foam is prepared by hardening an intimate mixture of a conventional foamable phenolic resole resin containing a blowing agent, a hardener and a surface active agent, and sodium tetraborate.
Inventors
- 👤 William L. Garrett
- 👤 Roy G. Grube
- 👤 Wayne C. Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:58
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0066; C08K; C08K3/00; C08K3/38; C08J2361/00; C08J2361/04; C08J2361/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
In a process for the manufacture of phenolic resin foams wherein a mixture of a phenol-aldehyde resole resin, a blowing agent, an acid catalyst, and an effective amount of a surface active agent are caused to form a solid foam, the improvement resulting in a heat-resistant, non-corrosive foam comprising adding to said mixture, prior to foaming, anhydrous sodium tetraborate of 12-200 mesh.
Claim 2
Dependent Claim
62 words
In a process for the manufacture of phenolic resin foams wherein a mixture of a phenol-aldehyde resole resin, a blowing agent, an acid catalyst, and an effective amount of a surface active agent are caused to form a solid foam, the improvement resulting in a heat-resistant, non-corrosive foam comprising adding to said mixture, prior to foaming, anhydrous sodium tetraborate of 12-200 mesh.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein 1 to 25 parts of said anhydrous sodium tetraborate is added per hundred parts of said phenolaldehyde resole resin.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein boric acid is added in addition to said sodium tetraborate.
Claim 5
Dependent Claim
13 words
The process of claim 3 wherein said boric acid is anhydrous boric acid.
Claim 6
Dependent Claim
62 words
A phenolic foam having improved non-corrosive character prepared by foaming and hardening and intimate mixture comprising (a) a conventional foamable phenolic resole resin containing a blowing agent, an acid catalyst and an effective amount of a surface active agent and (b) from 1% to 25% based on the phenol resole resin content of said mixture of anhydrous sodium tetraborate of 12-200 mesh.
Claim 7
Dependent Claim
62 words
A phenolic foam having improved non-corrosive character prepared by foaming and hardening and intimate mixture comprising (a) a conventional foamable phenolic resole resin containing a blowing agent, an acid catalyst and an effective amount of a surface active agent and (b) from 1% to 25% based on the phenol resole resin content of said mixture of anhydrous sodium tetraborate of 12-200 mesh.
Claim 8
Dependent Claim
22 words
The phenolic foam of claim 5 wherein 1 to 25 parts of anhydrous sodium tetraborate is mixed into said phenol resole resin.
Claim 9
Dependent Claim
77 words
A foamable composition of matter comprising (a) a liquid phenol-aldehyde resole having a solids content of 70-97% by weight; (b) 1 to 25 parts of 12-200 mesh anhydrous sodium tetraborate per hundred parts of said resole; (c) 2-20 parts of an acid catalyst per hundred parts of said resole; (d) 3-5 parts of a surface active agent per hundred parts of said resole; and (e) an amount of organic liquid forming agent sufficient to foam said composition.
Claim 10
Dependent Claim
77 words
A foamable composition of matter comprising (a) a liquid phenol-aldehyde resole having a solids content of 70-97% by weight; (b) 1 to 25 parts of 12-200 mesh anhydrous sodium tetraborate per hundred parts of said resole; (c) 2-20 parts of an acid catalyst per hundred parts of said resole; (d) 3-5 parts of a surface active agent per hundred parts of said resole; and (e) an amount of organic liquid forming agent sufficient to foam said composition.
Claim 11
Dependent Claim
17 words
The composition of claim 7 comprising additionally 1-15 parts of boric acid per hundred parts of resole.
Claim 12
Dependent Claim
10 words
The non-punking, non-corrosive, foamed and cured composition of claim 8.
References Cited (Backward Citations)
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US3484391A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |